75e51619df
Automated salvage commit — agent session ended (exit 124). Work in progress, may need continuation.
37 lines
1.1 KiB
JavaScript
37 lines
1.1 KiB
JavaScript
// modules/utils/geometry.js — Shared geometry helpers
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import * as THREE from 'three';
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/**
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* Creates a flat horizontal ring (lying in the XZ plane).
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*
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* @param {number} innerR
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* @param {number} outerR
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* @param {number|THREE.Color} color
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* @param {number} [opacity=0.4]
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* @returns {{ mesh: THREE.Mesh, mat: THREE.MeshBasicMaterial }}
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*/
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export function createHorizontalRing(innerR, outerR, color, opacity = 0.4) {
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const geo = new THREE.RingGeometry(innerR, outerR, 64);
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const mat = new THREE.MeshBasicMaterial({
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color, transparent: true, opacity,
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side: THREE.DoubleSide, depthWrite: false,
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});
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const mesh = new THREE.Mesh(geo, mat);
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mesh.rotation.x = -Math.PI / 2;
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return { mesh, mat };
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}
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/**
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* Creates a thin emissive strip (a very flat box).
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*
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* @param {number} width
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* @param {number|THREE.Color} color
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* @param {number} [opacity=0.55]
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* @returns {THREE.Mesh}
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*/
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export function createGlowStrip(width, color, opacity = 0.55) {
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const geo = new THREE.BoxGeometry(width, 0.035, 0.035);
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const mat = new THREE.MeshBasicMaterial({ color, transparent: true, opacity });
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return new THREE.Mesh(geo, mat);
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}
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